263321255 has 8 divisors (see below), whose sum is σ = 316143600. Its totient is φ = 210551616.

The previous prime is 263321239. The next prime is 263321257. The reversal of 263321255 is 552123362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 263321255 - 2⁴ = 263321239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263321257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 22979.

It is an arithmetic number, because the mean of its divisors is an integer number (39517950).

Almost surely, 2^263321255 is an apocalyptic number.

263321255 is a deficient number, since it is larger than the sum of its proper divisors (52822345).

263321255 is a wasteful number, since it uses less digits than its factorization.

263321255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26353.

The product of its digits is 10800, while the sum is 29.

The square root of 263321255 is about 16227.1764333787. The cubic root of 263321255 is about 640.9566219754.

The spelling of 263321255 in words is "two hundred sixty-three million, three hundred twenty-one thousand, two hundred fifty-five".